Install Configure Manage is just one of the qualifying training courses for VCP6-DCV - at the time of writing you can actually take any of these vSphere 6 courses:

Install, Configure, Manage

Optimize & Scale

Bootcamp

Fast Track

Design and Deploy Fast Track

Troubleshooting

Install, Configure and Manage plus Optimize and Scale Fast Track

Alternate paths to achieve VCP6-DCV are available for those who have previous or other VCP level certifications - you can find those under the Existing Candidate Requirements tab of the VCP6-DCV page.

In terms of exam information and preparation - the links above will give you costs, numbers of questions, amount of time, the exam topics that you will be tested on - for previous version exams this information was found in a PDF known as the "exam blueprint".

The exam pages will also tell you whether that particular exam is "proctored" or "non-proctored". Only the "proctored" exams need to be taken at a testing centre, "non-proctored" exams can be taken from any location/system with an internet connection.

As well as the preparation resources available on the exam pages, the VCP community forum page can also give you some great ideas and help from others, plus there are some great unofficial resources available too: